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Other Expense, Net - Other Expense, Net (Parenthetical) (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Components of Other Expense (Income), Net [Line Items]    
Restructuring $ 31 $ 45
Impairment of assets 727 74
Loss on investments 6 (56)
Loss on investments, after tax 5  
Proceeds from sale of investments (231) 220
Private Equity Investments [Member]    
Components of Other Expense (Income), Net [Line Items]    
Unrealized gain on investment revaluation 17 56
Unrealized gain on investment revaluation, after tax 15 53
Lyft [Member] | Private Equity Investments [Member]    
Components of Other Expense (Income), Net [Line Items]    
Unrealized gain on investment revaluation   46
Unrealized gain on investment revaluation, after tax   46
Loss on investments 23  
Loss on investments, after tax $ 20  
Number of shares sold of (investment in) Lyft, Inc. 5,400,000  
Proceeds from sale of investments $ 231  
Power & Vision [Member]    
Components of Other Expense (Income), Net [Line Items]    
Restructuring   20
Restructuring charges, after tax   20
Impairment of investment   60
Impairment of investment, after tax   59
Power & Vision [Member] | Getrag Jiangxi Transmission, Dongfeng Getrag Transmission And Getrag Ford Transmission [Member]    
Components of Other Expense (Income), Net [Line Items]    
Other than temporary impairment on equity method investments 700  
Tax component of impairment losses of equity method investments 36  
Impairment losses on equity method investments after tax 537  
Non cash impairment losses on equity method investments 127  
Power & Vision [Member] | Electronic Operations [Member]    
Components of Other Expense (Income), Net [Line Items]    
Impairment of assets 27  
Asset impairment charges after tax 20  
Body Exteriors & Structures [Member]    
Components of Other Expense (Income), Net [Line Items]    
Restructuring 31 25
Restructuring charges, after tax $ 31 23
Impairment of assets   14
Asset impairment charges after tax   $ 12